Boyle, Alan
Oxford University Press, 2007
Buku Teks
Kluwer Law International, 1996
Buku Teks
Anzilotti, Dionisio
Recueil Sirey, 1929
Buku Teks
edited by Konrad Zweigert and Jan Kropholler
A.W. Sijthoff, [Date of publication not identified]
Buku Teks
I. F. Dekker, E. Hey
T.M.C. Asser Press, 2012
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